<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			body{
				width: 3000px;
				height: 3000px;
			}
		</style>
		<script type="text/javascript" charset="utf-8">
		//滚动条位置变化
		window.onscroll=function(){
			console.log('滚动条位置发生改变了')
		}
		</script>
	</head>
	<body>
		
	</body>
</html>
